Answer:
neutrons, isotope
Explanation:
Isotopes are atoms of the same element with different atomic mass. The difference in atomic mass is as a result of difference in the number of neutrons in the nuclei of the atoms.
Hence, changing the number of neutrons of an atom with result in having different atomic mass but the number of protons and electrons remain the same.
No screenshots of anything you need ?
Answer:
burning a paper is chemical change
The answer is cold water because the water is cold and it’s not using thermal energy
